Attic / Basement / Garage Conversion Permit

Apply for a permit to convert an existing attic, basement, or garage into habitable living space in Portland. Conversions must meet Oregon Residential Specialty Code requirements for ceiling height, natural light, ventilation, egress, and fire separation. Basement and garage conversions may trigger additional requirements for moisture protection, radon mitigation, and zoning setbacks. Portland Zoning Code Title 33 governs density and parking standards that may be affected by adding habitable space.